Dishwashing machine



ffy. 1

Dec. 23, 1941. G. WEBB DIsHwAsHlNG- MACHINE:

original Filed July 26,` 1937 Jlvsn't or' y @sarge Webb Patented Dec.23, 1941 2,267,003 y g'UNITEDSTATES PAT-ENT oFFilci-z DISHWASHINGMACHINE George Webb, Hartford, Conn., assignor to Colts Patent FirevArms Manufacturing Company, Hartford, Conn., a corporation ofConnecticut original application July 26, 1937, serial No.

155,607. Divided and this 'application Febru'' ary24, 1938, Serial No.192,295

vprovide a dish washing machine of compact construction .so that theresultant machine -will y occupy aminimum of space whereby the machinevdistribution and control system. j Y

The casing is preferably formed in two sections l and 2 from stainless'steel and may be rectangular in cross section. The section! of thecasing may be provided with a4 peripheral may be placed in locationswhere only a small 5 flange 3 which may rest upon or be secured to spacecan be' devoted to such a machine. a table top or other supporting means4. The v"Another objectjis to provide adish. washing section 2 has oneyor more openings 5 therein l machine in which certain parts may bereadily which permit access to the interior of the casremoved to permitcleaning and inspection of ing. Doors such as shown at 6 may be slidablythe machine. l l0 mounted in guideways 1, and door counterbal- Other andfurther objects of the invention ancing means including chains 8,pulleys 9, and will be readily appa-rent to those skilled in the s aweight I0, all of known construction, are prefart `from'the followingdisclosure. 4 erably provided. The dishes to be washed areThisapplication isa division of my -co-pending preferably stacked intrays whichl may be placed application Serial No. 155,607, filed July26, 1937. 15 in the machine" and be supported on guide In theaccompanying drawing I have illustracks Il. I trated. the inventionasrequired. bythe statutes, Y In accordance with the invention the casingi but it will be understood that the drawing is for is provided withmeans for dividing the same illustrative purposes only and is not to beconinto upper and lower portions, the lower portion strued as limitingor'defining the scope of the 20 serving as a reservoir for the washing.fluid which invention', the'v claims forming a part of this is to berecirculated. Thisdividing means or specification being relied-upon forthat purpose. partition preferably includes' a perforated por- In the'drawing: tion, through which the fluid, after passing 'over Fig. 1 is afrontelevation of adishwashing the dishesfmust passte return to thereservoir. machine embodying the invention, certain parts '25 In thisway the'fluid to be recirculated is freed of thetcasing being brokenaway to show the of any refuse from'the dishes vbeing washed. Theinternal` construction andotherfpart's. of thel perforated portion.. maytake the form of one internal construction being ,shown in dotted ormore removable refuse trays, the same being lines. 'y preferably solocatedand supported that removal Fig. 2 is a plan'view of the lowersection of 30 thereof. may bev easily effected. n 'the dish washingmachine casing, certain parts -I have 'Ishown a casingldividing,rneanysinorbeing omitted for clearness. y porating the abovefeatures of thisphase of the Fig. 3 is a view s'imilar to Fig.2;with allof the invention and I shall now describe the same as it parts in place;v g is the type which I now deem preferable.

Prior to the present inventions mostdishwash- 3 The dividingmeanscomp'risesal substantially ing machines have been of substantial sizeand horizontal imperforatefportion or apron' i2fand consequently couldnot be used where-only a a perforate portion which, as 'shown in Fi`g.3, limited space could be devoted to dish washing `comprises a pluralityof refuse traysv I3, and such as in soda and lunch fountains,'smallkitchwhich is positioned in substantially horizontal ens, and othersimilar'places. ,These prior art 40 register withthe apron I2. The sumof the remachines were also of complicated and relatively spectiveareasv of the imp erforate l and perforate expensive construction whichfurther precluded portions is such that it equals the cross sectional amore universal use. My'dishwashing machine areaof 'the casing, that is,the areas of the imis primarily intended for use. in such places asperforate and perforate portions are complehave been set forth,although-its use is obviously A" mental with respect to the area of thecasing. not sc limited. As will be apparent hereinafter,` The apron I2is preferably supported b'y brackcertain phases of the invention aresusceptible ets I4 secured tothe sides of the casing, and, if ofapplication to lany dish washing machine, and desired, one or more thumbscrews I5 Amay be as to theseI mean to claim'them broadly. provided fordetachably securing the apron to In 1 I have shown one formlwhicha dish"o -thebrackets The perforated portion may also washing machineincorporating the features of rest uponone. or more supports, itsextending the invention may take.' machine includes,- from the side ofthe casing andit may also have a casing, means for supporting a tray ofdishes an edge extending over the adjacent edge of to be washed, and awashing and rinsing fluid the apron to be supported thereby, I haveillus- '.trated .this construction for supporting the refuse trays I3,as is apparent in Fig. 3, wherein the. forward edges- (as viewed in thisilgure) of thel of the apron I2.

refuse trys project over and rest upon the edge I have illustrated awashing and rinsing fluid vbe recirculated by the pump. After the disheshave been thoroughly washed, the lever is'm'oved to its originalposition which serves to return the distribution system constructionwhich may be l advantageously used in commotion with'the alreadydescribed casing construction, but I realize that the casing may becombined with distribution systems other than that shown.

The fluid distribution' system preferably in cludes discharge' heads ordevices positioned above and below the dishes to be washed. Eachdischarge head may include a washing fluid conduit having iluoiddischarge openings therein and a rinsing fluid conduit also havingdischarge openings therein. I now prefer to so construct each of thesetwo heads that itmay be mounted in or removed from the casingfas a unit.

In the illustrated construction discharge heads or devices l1, I'I arepositioned above andbelow the dishes to be washed. Each discharge headswitch to its on position. The lever is now moved to the position inwhich it serves to operl.ate the valve 26 to permit the rinsing fluid to'ow into its distribution system and be discharged over the dishes.After the dishes have been thoroughly rinsed the lever may be returnedto its original position.

If desired, the operator may easily lift out the, refuse trays I3 forcleaning as the lower discharge head does not project over them. The

. apron I2 may also be easily and quickly removed.

To eifect removalof the apron, the lower discharge. head must be firstremoved and to do' so it is only necessary to unscrew the singlethreaded ring 2O and remove the discharge head unit from the casing. Theapron may now be lifted out after removing the thumb screws IS. Theapron, lower discharge head', and refuse trays can be reassembled in themachine by a mere includes washing iluidconduits IB and fluid conduitsI9, the two conduits .each having l suitable -discharge openings thereinand)being preferably secured to each other so that the'two conduits maybe put in place o'r removed rom the casingasaunit.Eachoftheunitsisr'igidlyse-v cured in operative position as shown andeonnected with the proper uid distribution systemV by means of thethreaded ring 2li. The dimensions of the lower discharge head unit arepreferably such that the-unit does not interfere with the ready removalof the refuse traysr I3. -This construction is illustrated in Fig. 3wherein the lower unit is shown as projecting over only the.. vItshould, of course, be understood that if some other type of dischargehead construction were used in conjunction with a casapronV I2.

ing dividing means such as above described, the dimensions of thesubstituted construction might well also be so limited for the samereason.

means xedly mounted within the tank, a uid4 conducting means within thetank, a fluid discharge device rigidly mounted in operative posi- Thewashing fluid discharge conduits are suit..

ably connected with'the pipe 2li which extends upward from the bottom ofthe casing adjacent one side wall thereof. Secured to the bottom of thecasing is la centrifugal pump 22 having its discharge outlet connectedwith the pipe 2| and".

its'intake connected with an outlet member 23 in the bestem of thecasing. An electric mecc;- u .is provided for driving the pump. Therinsing uid discharge conducts I9 are connected to a tion in the upperportion of the casing but below the dish supporting means and opening insaid `upper portion and secured to said fluid conducting 'means so as tobe readily connectible thereto and disconnectible therefrom for removalfrom the casing, said dishsupporting means andsaid discharge device whenin position being soy related as to prevent the removal from the casingof any article of substantial area from beneath said discharge device, ahorizontal imperforate apron of st ibstantialn area positioned in thecasing directlybelow the discharge device, said apron being removablefrom the casing upon detachpipe 25 extending parallelly with the pipe 2land i being suitably connected with a valve 26 secured to the bottom ofthe casing. An.` operating lever 21 servesv to' selectively operate anelectric switch 1 28 or the valve 2i as desired, the switch 2l serv' ingto start and stop the motor 24..

Theoperation ofthe dish washing machine will now be described,i it beingassumed that the machine is properly connected with suitable sourceswashing iiuid discharge conduits Il, the 4fluid passes over the dishes,drains on to the apron I2 or refuse trays Il and-then passes through'theperforations inthe `trays to be `i'reed of -refuse of electrical energyand rinsing mnd. .The dishes i to be washed may be arranged in asuitable `rack which is placed in the machine and res ment and removalof the discharge device, and a perforate tray means in horizontalregister with the apron` and positioned at one side of the casing so astobe readily removable from the casingl when said discharge device is inits operative `position inthe casing, said apron and-tray means jointlyA`constituting a partition' substantially coext'ensive in area'. withthe horizontal area of the 2. iIna dish washing machine, thecombinationof a casing having upper and lower portions, the saidupper'portion having an opening in a side wall thereof permitting accessto the interior of thetcasing and the said lower portion constituting atank having bottom and side walls for the -receptio'n and storage ofwashing fluid, a .pair of dish rack supporting rails aligned with saidopening, a fluid conducting means within the tank .device rigidlymounted in operative position in adjacent one side wall thereof. a fluiddischarge the upper portion of thecasing between said dish racksupporting rails and below said opening and secured to said fluidconducting means so as to and again into the tank portion o fthe casingto 75 be readily connectible theretoand'disconnectible therefrom forremoval from the casing, said dish rack supporting rails and saiddischarge device when in position being so vrelated as to prevent theremoval from the casing of any article of' 'of the discharge device, anda perforate tray means in horizontal register with the apron andpositioned at one side of thecasing so as to be readily removable fromthe casing when said discharge device is in its operative position inthecasing, said apronv and tray means jointly constituting a partitionsubstantially coextensive in area with the horizontal area of thecasing.

GEORGE WEBB.

